BuildCircuit’s breadboard power supply DIY kit

Here is a very simple breadboard power supply kit that takes power from a DC wall wart and outputs a selectable 5V or 3.3V regulated voltage. The .1″ headers are mounted on the bottom of the PCB for simple insertion into a breadboard.

Pins labeled VCC and GND plug directly into the power lines. The lone pair of pins have no electrical connection but help support the PCB. There are two pins available within the barrel jack footprint. Any stripped +/- DC supply(6V to 15V) can be connected instead of the barrel connector. Board has both an On/Off switch and a voltage select switch (3.3V/5V).

Comes as a bag of parts kit and is easily assembled if you can follow the silkscreen indicators and have beginning experience with a soldering iron. You will need to read the resistor bands or use a multimeter to determine the resistor sizes.

Components of breadboard power supply

Kit Includes:

DC Barrel Connector (2.1mm center positive)

TO-220 Voltage Regulator (LM317 1.5A max current)

1N4001/1N4007 Reverse Protection Diode

100uF Capacitor

10uF Capacitor

0.1uF 50V Capacitor

Power LED – High Brightness

2 x SPDT Slide Switch

4 x 0.1″ Header Pins

2 x 330R Resistor 1/4W

390R Resistor 1/4W

240R Resistor 1/4W

Bare PCB with Silkscreen Indicators (31.75mm x 31.75mm)

PTC resettable fuse 500mA

Look at the PCB below.You can see the silkscreen indicators/labels of the components. If you follow the labels correctly, you can easily assemble all the components on to the board.

1 COMMENT

My name is Nick. ( I live in Kiev). I like breadboard very much and would like to buy it as a kit. Be so kind to inform me how to do that and what is the prise of it .
In addition to it I need a set of details to build an ultrasonic atomizer (50 – 200 W or even more). Will you be so kind to inform me whether it’s possible to buy everything necessary for that .